CN214941628U - Chord-supported truss girder - Google Patents
Chord-supported truss girder Download PDFInfo
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- CN214941628U CN214941628U CN202121191495.2U CN202121191495U CN214941628U CN 214941628 U CN214941628 U CN 214941628U CN 202121191495 U CN202121191495 U CN 202121191495U CN 214941628 U CN214941628 U CN 214941628U
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Abstract
The utility model provides a string truss girder, including U type chord member, connect a plurality of V type vaulting poles in U type chord member middle section, connect the U type connecting rod at U type chord member both ends, with the cable that both ends U type connecting rod are connected, the cable middle part passes a plurality of V type vaulting pole bottoms in proper order, applys prestressing force to the chord member through taut cable. The utility model provides a string truss girder can be used to the small-span structure, and the standardization level of component is high, connects more in a flexible way, and structure weight is light, and production simple to operate synthesizes the cost and hangs down.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to a chord-supported truss girder.
Background
The string support structure is a rigid-flexible combined composite prestress structure, the structure is essentially that a stay bar is used for connecting an upper compression bending member and a lower tension member, and the stress form of the upper member is improved by applying prestress on the tension member. The string support structure is definite in stress, can fully exert the advantages of two rigid and flexible materials, is simple and convenient to transport and construct, and has a good application prospect.
The components of the chord support structure in the prior art are generally used for large-span structures, are rarely used for small spans, and the stay bar and the upper chord member are rigidly connected, so that the standardization degree of the components is low. Therefore, the invention aims to design the chord-supported truss girder, which has the advantages of high component standardization degree, light weight, convenient production and installation and low comprehensive manufacturing cost.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model discloses a solve the technical scheme that the problem that exists adopts among the prior art as follows:
a chord-supported truss girder characterized in that: the middle part of the stay cable sequentially penetrates through the bottoms of the V-shaped stay rods, and prestress is applied to the chord rods by tensioning the stay cable;
u type chord member is opening decurrent U type structure, including the upper flange board that is located the top and two parallel web A that are located both sides, the middle section and the V type vaulting pole junction and both ends and U type connecting rod junction of U type chord member pass two parallel web A and all seted up the bolt hole to conveniently use the fastener to connect.
And two ends of the upper flange plate extend out of the wing plates to increase the rigidity and the bearing capacity outside the plane of the U-shaped chord member.
The lower ends of the two parallel webs A extend outwards to form flanges so as to increase rigidity and bearing capacity outside the plane of the U-shaped chord member.
The quantity of V type vaulting pole is confirmed according to the span and the load of string truss girder, the whole side of V type vaulting pole is the V type, and V type vaulting pole cross section is the U type of opening upwards, including a lower flange board and the web B of a pair of parallel in both sides, web B upper end is equipped with the turn-ups B that inwards turns on one's side, is equipped with the recess on the lower flange board of V type vaulting pole, and the cable is worn to locate in the recess, be equipped with the bolt hole with U type chord member junction on the two parallel web B of V type vaulting pole to be connected with U type chord member through fastener A conveniently.
The outer edge distance of the two parallel web plates B of the V-shaped stay bar is 0.5-2mm smaller than the inner edge distance of the two parallel web plates A of the U-shaped chord bar, so that the V-shaped stay bar is convenient to mount.
The cross section of the U-shaped connecting rod is of a U shape with an upward opening and comprises a lower flange plate and a pair of parallel web plates B, the upper end of each web plate B is provided with a turned-over edge B which turns on the side inwards, bolt holes are formed in the positions, connected with the U-shaped chord members, of the two parallel web plates B of the U-shaped connecting rod so as to be conveniently connected with the U-shaped chord members through fasteners A, and a stay cable penetrates through a lower flange plate of the U-shaped connecting rod and is connected with the U-shaped connecting rod through the fasteners B.
The outer edge distance of the two parallel web plates B of the U-shaped connecting rod is 0.5-2mm smaller than the inner edge distance of the two parallel web plates A of the U-shaped chord member, so that the U-shaped connecting rod is convenient to mount.
The U-shaped chord member, the V-shaped stay bar, the stay cable, the U-shaped connecting rod and the fastener A are all made of metal materials or composite materials.
The utility model has the advantages of as follows:
the chord-supported truss girder provided by the invention can be used for a small-span structure, the standardization degree of components is high, the connection is more flexible, the structure weight is light, the production and the installation are convenient, and the comprehensive cost is low.
Drawings
Fig. 1 is a schematic structural view of a chord-supported truss girder of the present invention;
FIG. 2 is a schematic view of a U-shaped chord structure;
FIG. 3 is a schematic view of a V-shaped stay bar;
FIG. 4 is a schematic view of a U-shaped link structure;
FIG. 5 is a schematic view of the connection structure of the U-shaped chord member and the V-shaped brace;
FIG. 6 is a schematic view of the connection structure of the U-shaped chord member and the U-shaped connecting rod;
FIG. 7 is a schematic structural view of the positional relationship between the V-shaped stay and the cable;
wherein: 1-chord support truss girder, 2-U-shaped chord members, 3-V-shaped support rods, 4-guy cables, 5-U-shaped connecting rods, 6-fasteners A, 7-upper flange plates, 8-wing plates, 9-web plates A, 10-flanges A, 11-flanges B, 12-web plates B, 13-grooves, 14-lower flange plates and 15-fasteners B.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
As shown in fig. 1, a chord-supported truss girder comprises a U-shaped chord 2, a plurality of V-shaped support rods 3 connected to the middle section of the U-shaped chord 2, U-shaped connecting rods 5 connected to both ends of the U-shaped chord 2, and guys 4 connected to the U-shaped connecting rods 5 at both ends, wherein as shown in fig. 7, the middle parts of the guys sequentially pass through the bottoms of the plurality of V-shaped support rods 3, and prestress is applied to the chord by tightening the guys 4;
u type chord member 2 as shown in fig. 2 is the U type structure of opening decurrent, including the upper flange plate 7 that is located the top and two parallel webs A9 that are located both sides, and the middle section and the V type vaulting pole 3 junction and both ends and the U type connecting rod 5 junction of U type chord member 2 pass two parallel webs A9 and have all seted up the bolt hole to connect with fastener 6. Both ends of the upper flange plate 7 extend outwards out of the wing plate 8 to increase the rigidity and bearing capacity out of the plane of the U-shaped chord 2. The lower ends of the two parallel webs A9 extend outwards to form flanges 10 so as to increase rigidity and bearing capacity outside the plane of the U-shaped chord 2.
The number of the V-shaped stay bars 3 shown in fig. 3 is determined according to the span and the load of the chord truss girder, the whole side surface of the V-shaped stay bar 3 is V-shaped, the cross section of the V-shaped stay bar 3 is U-shaped with an upward opening, the V-shaped stay bar 3 comprises a lower flange plate 14 and a pair of web plates B12 which are parallel at two sides, the upper end of the web plate A is provided with a flange B11 which turns over inwards, the lower flange plate 14 of the V-shaped stay bar 3 is provided with a groove 13, and the stay cable 4 is arranged in the groove 13 in a penetrating way. The joints of the two parallel webs B12 of the V-shaped stay bar 3 and the U-shaped chord 2 are provided with bolt holes so as to be conveniently connected with the U-shaped chord 2 through fasteners A6.
The distance between the outer edges of the two parallel webs B12 of the V-shaped brace rod 3 is 0.5-2mm smaller than the distance between the inner edges of the two parallel webs A9 of the U-shaped chord member 2, so that the V-shaped brace rod is convenient to install.
The cross section of the U-shaped connecting rod 5 shown in fig. 4 is a U-shape with an upward opening, and includes a lower flange plate 14 and a pair of parallel webs B12, the upper end of the web a is provided with a turned-over edge B11 turned over inwards, the joint between the two parallel webs B12 of the U-shaped connecting rod 5 and the U-shaped chord 2 is provided with a bolt hole to facilitate the connection with the U-shaped chord 2 through a fastener a6, and the guy cable 4 passes through the lower flange plate 14 of the U-shaped connecting rod 5 and is connected with the U-shaped connecting rod 5 through a fastener B15.
The distance between the outer edges of the two parallel webs B12 of the U-shaped connecting rod 5 is 0.5-2mm smaller than the distance between the inner edges of the two parallel webs A9 of the U-shaped chord 2, so that the U-shaped connecting rod is convenient to install.
The U-shaped chord 2, the V-shaped stay bar 3, the stay cable 4, the U-shaped connecting rod 5 and the fastener A6 are all made of metal materials or composite materials, the fastener A6 is of a bolt-nut structure, the fastener B15 is of a bolt-nut structure, the stay cable is wound on a bolt of the fastener B15, and prestress is applied to the stay cable 4 through screwing the bolt.
A method of installing a chord supported truss girder comprising the steps of:
step 1, forming a U-shaped chord 2 and a U-shaped connecting rod 5 by rolling or stretching; the V-shaped stay bar 3 is formed by punch forming or stretching and bending;
and 4, penetrating the two ends of the stay cable 4 through the grooves 13 of the V-shaped stay bar 3, connecting the stay cable 4 to the lower flange plate 14 of the U-shaped connecting rod 5 through a fastener B15, and applying prestress to the stay cable 4 by screwing the fastener B15 at one end.
The scope of the present invention is not limited to the above-described embodiments, and it is apparent that those skilled in the art can make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (7)
1. A chord-supported truss girder characterized in that: the middle part of the stay cable sequentially penetrates through the bottoms of the V-shaped stay rods, and prestress is applied to the chord rods by tensioning the stay cable; u type chord member is opening decurrent U type structure, including the upper flange board that is located the top and two parallel web A that are located both sides, the middle section and the V type vaulting pole junction and both ends and U type connecting rod junction of U type chord member pass two parallel web A and all seted up the bolt hole to conveniently use the fastener to connect.
2. A chord-supported truss girder according to claim 1 wherein: and two ends of the upper flange plate extend out of the wing plates.
3. A chord-supported truss girder according to claim 1 wherein: the lower ends of the two parallel webs A extend outwards to form flanges.
4. A chord-supported truss girder according to claim 1 wherein: the quantity of V type vaulting pole is confirmed according to the span and the load of string truss girder, the whole side of V type vaulting pole is the V type, and V type vaulting pole cross section is the U type of opening upwards, including a lower flange board and the web B of both sides a pair of parallel, web B upper end is equipped with the turn-ups B of inwards turning on one's side, is equipped with the recess on the lower flange board of V type vaulting pole, and the cable is worn to locate in the recess, be equipped with the bolt hole with U type chord member junction on the two parallel web B of V type vaulting pole to be connected with U type chord member through fastener A.
5. A chord-supported truss girder according to claim 4 wherein: the outer edge distance of the two parallel web plates B of the V-shaped stay bar is 0.5-2mm smaller than the inner edge distance of the two parallel web plates A of the U-shaped chord bar.
6. A chord-supported truss girder according to claim 1 wherein: the cross section of the U-shaped connecting rod is of a U shape with an upward opening and comprises a lower flange plate and a pair of parallel web plates B, the upper end of each web plate B is provided with a turned-over edge B which turns on the side inwards, bolt holes are formed in the positions, connected with the U-shaped chord members, of the two parallel web plates B of the U-shaped connecting rod so as to be conveniently connected with the U-shaped chord members through fasteners A, and a stay cable penetrates through a lower flange plate of the U-shaped connecting rod and is connected with the U-shaped connecting rod through the fasteners B.
7. A chord-supported truss girder according to claim 6 wherein: the outer edge distance of the two parallel web plates B of the U-shaped connecting rod is 0.5-2mm smaller than the inner edge distance of the two parallel web plates A of the U-shaped chord member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121191495.2U CN214941628U (en) | 2021-05-31 | 2021-05-31 | Chord-supported truss girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121191495.2U CN214941628U (en) | 2021-05-31 | 2021-05-31 | Chord-supported truss girder |
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| CN214941628U true CN214941628U (en) | 2021-11-30 |
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| CN202121191495.2U Active CN214941628U (en) | 2021-05-31 | 2021-05-31 | Chord-supported truss girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152782A (en) * | 2021-05-31 | 2021-07-23 | 武汉理工大学 | Building chord support truss girder and installation method thereof |
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2021
- 2021-05-31 CN CN202121191495.2U patent/CN214941628U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152782A (en) * | 2021-05-31 | 2021-07-23 | 武汉理工大学 | Building chord support truss girder and installation method thereof |
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